3D need to end up in 4, thus D=8
A and B are small numbers (from B A -> 4) lower than 4. Considering also C C C -> A it means that A can be max 3.
From here on I did some error and try and got to A=1, B=2, C=3, D=8
3D need to end up in 4, thus D=8
A and B are small numbers (from B A -> 4) lower than 4. Considering also C C C -> A it means that A can be max 3.
From here on I did some error and try and got to A=1, B=2, C=3, D=8